Mixing and grinding machine.



G. N'KINNELL. MIXING AND GMNDING MACHINE,

APPLICATION FILED JUNEZE, 1909.

Patenmaug. .29, 1911 3 SHEETS-SHEET l.

m, F Pf mw WlTNESES G. N* KINNELL.

MIXING AND GRINDING MAGHNE. APPMGATION HLBD lJUNE 23, 190s,

@90.3.9653, Patented Aug.29,1911.

SSHEETS-SHEBT Z.

W I'FN ESSES flNvENjoR George A. Kz'nneZZ.

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ATTORNE.

G, N., KINNEL'L. MIXING AND GRINDING MACHINE.

APPLIOATIOH um) Jmmzs, 1909.

mf., I Paname@ Aug. 29, 1911 3 SHEETS-SHEET 3.

WITNESSES miran sanrns raras@ onirica.

GEORGE-:N- K1NN'Eflldlfi,4 OF PITTSFIELD, MASSACHUSETTS, ASSIGTO-Et OF ONE-THIRDTO JOHNJ. WHITTLESEY, 0F PITTSFIELD, MASSCEUSETTS.

MIXING `ANI) .GRNDING MACHXNE.

Speciaeation of Lettrsiatent. Fatented. Aug. 2?, 1311.

Application led June 2.3, 1909.' Serial`No. 503,813.

To all whom it may concern:

Be it known that I, GEORGE-N. KINNELL, Aa citizen of the United States, residing at Pittsfield, in the county of BerkshireA and 5 State ofMassachusetts, haveinvented certain new and useful Improvements' in Mixing and Grinding Machines for Concrete andother Substances, of which the following is a specification. l

vMy invention relates to' machines adapted for. mixing concrete, cement, mortar and other compounds in awet or dry state, and also to machines adapted to grind, as well as mix, friable materials or substances into a comminuted, mass'.

The principal objectof the invention concerns the combination with a rotary recep-v tacite, of improved means for facilitating the process of mixing or grinding substances and comprising a plurality of flexibly connected or jointed elements movable lrelativelyto the receptacle and formed, ar-l ranged andoperated in a novelv manner. The quality of flexibility of the means referred1to operates to break up lumpy or aglutinated parts or particles of the mass and to prevent the same from adhering to- :gether or to the walls of the receptacle or receiver, as commonly occurs in present forms ofmixers or grinders. Y

Havinor 'thus described the general characterand purpose of my invention, I-will proceed to describe-a specific useful form of embodiment thereof in connection with the accompanying drawings, wherein- Figure lis a sectional side view of a mixing machineembodying the principles of my-invention; Fig. 2 is a longitudinal sectional top view of the-receiver or drum and -tional view of the same; Fig.v 4C' is anvend fromthe rear or receiving'endl;,.Fig. 5 is a reduced cross-sectional viewof the receiver' or drum on the line afb/of Fig.` 2, A disclosing the interior mechanism,`"and Figs. 6 and`7, edge and top views, respectively, 'of Nthe agitatorsl attached to. some of lthe f chains.4 yThe mixing receptacle isshown as a 1on- `gitudinally extended cylinder, tube, or drum 1 rotatively supported at-'either end upon pillow-blocks 2, 3, each= of 'which is provided with`a set of'aIitifriction-rolls a, 4,

'55 which enga'geaunulartracks or ways 5, 5,

inclosed mechanism; Fig. 3 is a vertical secon the drum and serve as roller-bearings for the latter. The drum is preferably supported ina normally tilted position, being inclined downward. from its rear or receiving end sufficiently to cause the mixture to gravitate slowly toward the forward or discharging end. `llorward or rearward displacement of the drum is prevented by the engagement of the rolls fl, 4t, with annular flanges 6, 6, provided at either end of the 65. drum at theouter edges of the tracks or ways 5, 5. l The drum is operated by a rotary drivenshaft 7 supported in a position parallel to the axis of the drum preferably by the pillow-blocks 2, 3, the shaft being provided with pinions 8, 8, which are arranged lto mesh with separate annular racks or ringgear 9, 9, on'the drum. As a convenient mode of driving the shaft 7, I have shown a l5` motor 10 with suitable power-transmitting connection, such as a gear-wheel 11 mounted on the motor-shaft and meshing with a gear-` wheel 12 carried by the shaft 7.' I l ,j

rlhe drum when employed 'essentially as 3.0' a mixing receptacle, as here shown, is -con-` structed with open ends, the receiving end being 'preferably slightly tapered at 13' to facilitate the collection of the substances introduced thereat for mixture. Within the 85 drum are provided a plurality of iiexibly connected 'or jointed elements adapted 'to play about Vin free relation thereto `and within the mass to be mixed. These I have Y embodied'in the form of chains or catena- 90 tions 14, 15, composed of links movable relatively to each other and preferably hung upon rods or shafts 16, 17, and depending downwardv upon or to points adjacent the bottom ofthe druminV such manner as'to 95 freely commingle with the massto be mixed. Supposing the drum to move in a 4clock-,wise direction, the several chains are shown as supported fromv points at the right of the axisof the drum `looking* forwardly and somewhat above a horizontal 'plane through the axis, thus permitting a more extensive lield for play .when carried toward the opposite side by the .centrifugal movement im-` parted to the-mass bye-,the action of the drum.

The rotary shaft 1G and the stationary r0d 17 are supported in spaced relation to each other and parallelto the axis of the drum preferably by uprights or'standards 18, 19,.'

mounted upon a base 20, which may also serve as a support for the pillow-blocks 2, 3, and motor 10, at opposite ends of the drum, said shaft and rod being projected freely through the body of the drum.

The chains 14, distributed at intervals along the shaft 16, are preferably arranged` in pairs and united at theleottoms in the shaftv 16 is rotated preferably by means of the shaft 7 with'suitable power-transmitting y connection, such as an endless link belt 24 engaging separate sprocket wheels 25, 26,- carried by the said shafts at points beyond the body of the drum: i y

On the rod 17, which is preferably dis- 'posed in comparatively close proximity to the wall of the drum, I arrange the chains 15, 15, opposite points intermediate adjacent festoons on the shaft 16, whereby the extended ends of the chains 15, which move loosely about on the bottom of thedrum and are carried forward by the' action of the latter, play between the adjacent festoons and are less liable to become; entangled therewith. Said chains 15, v15, are shown as flexibly secured to the rod 17 by means of eye bolts 27, 27.

Supported bythe pillow-block 18 is shown a hopper 28 projecting into the receiving end of the-drum and adapted to direct the materials introduced for mixture, while at the discharging end is shown a chute 29 supported by the pillow-block 19 in a sluitable position to guide the discharged mixture. -Said hopper and chute may be xed gto their respective supports or adjust-ably secured so as to vary their positions.

For the purpose of introducing water into the drum' I have shown a pipe 8() journaled, or otherwise supported, on the pillowhlock 18 at the receiving end and projecting intothe drum for discharge'prefcrably'at a point intermediate the receiving and discharging ends thereof so that the rocess of mixing `the materials will have een partially performed before the addition of the water.4 Said pipe is adapted to be connected .at its outer end with any convenient source of supply and is provided with a valve 31 for regulating the quantity of water to bc used..

The form of mixing receptacle herein shown is adapted more particularly for the manufacture of concrete, cement or mortar on a large scale as would be required in the construction of extensive building foundations, dams,'bridges, canals, etc. The normally inclined position of the drum and the unobstructed discharge end enable the force of gravity to automatically carry forward and discharge without manual intervention or assistance the finished mixture. The process of mixing may proceed, therefore, without cessation or interruption, and, by the provision of additional means for automatically feeding materialsl to the hopper and for carrying off the completed mixture, is independent of manual aid.

The free ends of the chains 15,' 15, are carried along the bottom of the drum by the rotary motion imparted to the mass and tend to break up and grind agglutinated particles in the mixture and at the same time to free the sides of the drum from portions of Vthe mass adhering thereto. The movement of the` drum normally" carries `the mixed mass toward one side and away from the chains`14, 15, and by tending to raise the center f gravity thereof causes the mass to fall backward upon the chains 14 and the agitatois 23 provided thereon, which lift and knead the mass about by reason of the vertical movements imparted thereto by the eccentrics on the rotary shaft 16.

I claim as new, and desire to secure by Letters Patent, the following:

1. A mixing machine comprising a receiving-chamber having an open receiving and an open discharging end, a rotary' shaft ro- `iecting through said chamber and aving an eccentric member ixedthereon, a catenation of movably connected links movably secured to said eccentric member and depending into said chamber and adaptedto be actuated by said shaft.`

2. A mixing or grinding machine com. prlsing a receiving-chamber, a rotary shaft y within said chamber, a plurality of eccentric members lixcd on said shaft, and a luralityof catenations composed of mova iyv connected links depending from said shaft into said chamber and adapted to be actuated vertically by said shaft, each of said catenations having one end movably secured to a separate eccentric vmember and having itslower end connected with the corresponding endrof an adjacent catcnation to form a festoon, substantially-as shown. y

3. In a mixing machine, the combination with a receiving-chamber, a rotary' shaft within said chamber, an eccentric member fixed on the shaft,l and a catenation of movably connected links movably secured to said eccentric member and depending into said chamber'in such 4manner as to commingle with' the masstobe mixed and to agitate the same when actuated bythe chafa-of auxlary means provided on said caenaion fm iftng the massa Snistal'itialy as shonm.

4. In a mixing or grinding; nianhinn, the combination with a. leoevingchambfer, of n support, a catenarton of movabjv .conneoo members secued to said support and hfwng a, fee portion depending into said chamber, and means for imparting to said ca'onf-inn movements atenaely in im upward and downward direction for die purpose Sa forth.

plurality of animations depending info smid chamba', means for the support of saidl 'catenohons 1n a spaced elation, and means for-imparting to adjacent catenations mow ments in opposite verical directions C. In a mix-ing ol'grnding machine, the Combination with a rotary :f eneiv'ngchsunw ber, of a Cntenaton composed of a; plm-alii" of movaby connected links depending; .into

v mi., on in Sump/ift amio Sayid chamfoor, and mains Y nimmt-lng' 'io sind cnhnatlon n l'ooipiocaing S Y n0' nd grinding; machina non prsing a r-'eccni winkel; :i zfomfy snzaji; 

